public class MathCalc {
    public static void main(String[] args){
        System.out.println(5+6);
        System.out.println(5-6);
        System.out.println(5*6);
        System.out.println(5/6.0);
        System.out.println(1+2-3*4/5.0);
        System.out.println((1+2-3)*4/5.0);
    }
}
